5x+12x2 10x−3x2
− + ____________ −5x+15x2 ..........[2 marks]
Factorise:
(i) 12x2 − 7x + 1 (ii) 2x2 + 7x + 3
(iii) 6x2 + 5x − 6 (iv) 3x2 − x − 4
Subtract:
-x2+10x-5 from 5x - 10